Grinding and polishing roll.



A. H. WHATLEY.

GRINDING AND POLISHING ROLL. APPLICATION FILED D26. 23, 1907.

919,665. Patented Apr. 27, 1909.

2 SHEETS-SHEET 1.

"I IIIIILI "I m o A. H. WHATLEY.

GRINDING AND POLISHING ROLL.

APPLIOATION FILED DEC. 23, 1907.

91 9,665, Patented Apr. 27, 1909.

2 SHEETS-SHEET 2. 2 /9 35 as willbe UNITED STATES PATEN oEEroE.

ALFRED H. WHATLEY, or PROVIDENCE, RHODE ISLAND, ASSlGNOR TO UNITED s'rATEs FLOOR SURFAOING MACHINE ooMrANY,'oF PROVIDENCE, RHODE ISLAND, A CORPORA- TIoN or RHODE ISLAND.

GRINDING AND POLISHING ROLL.

Specification of Letters Patent.

' Patented April 27, 1909.

Application filed December 23, 1907. SerialNo. 407,764.

\ To all whom it may concern: I

Be it known that I, ALFRED H. WHATLEY,

a citizen of the United States, residing in the city of Providence, in the county of Proviin Grinding and Polishing Rolls, of which the following is a specificatlon, reference being had therein to the accompanying drawing.

This invention relates to surfacin rolls and has for its object to provide a roll 6 practical construction adapted to engage and positivel fasten bothends of the abradingor polis ing material which is wrappe aroundit, and a further object is to provide means whereb this coverin may be drawn tightly aroun the roll and old in that position.

,In carrying out my invention I rovide a body portion through which the rol is driven and on this body portion a shell-is mounted and'adapted to be moved independent of said body. Around this shell is wrapped the sheet of surfacing material, the ends of which are passed through a slot in said shell and secured within by a air of jaws mounted on said'body.- .By thls construction it will be the roll.

The invention consists of other novel features and arts and combinations of the same lly describedhereinafter and then pointed out in the a pended claims.

A practical embo iment of the invention is represented in the accompanying drawings, forming a part of this specification, in which 40 similar characters of reference indicate corresponding arts in all the views.

. In the rawings: Figure 1- is a plan view of the com lete roll showing'a diagonal slot therein an the driving gear at one end thereof. Fig. 2 is a section on line 2-2 of Fig. 5 showing the gripping jaws locked in their open position, a ortion of one of the body flanges being brol en away to show the tension cam beyond. 'Fig. 3 is ,the same as Fig. 2 showing the wrapper in position on the shell, with its ends passed through the slot into the gripping jaws which are locked in their closed position, also showing the tension cam acting on. the covering to tlghten it'on the roll. Fig. 4' shows a small section of the interior of the loose shell with the yoke attached thereto, in which yoke the wrapper tension cam is adapted to work. Fig. 5 1s a central sectional view on line 55 of Fi 2. Fig. 6.is a sectional view on a portion 0 the shell on line 66 of Fig. 2. Fig. 7 is a perspective view of the body, core, or inner port1on of the roll. Fig. 8 is a perspective view showing one of t e movable jaws mounted on said body portion and the forked end by which said jaw is operated by means of the rotatable cam.

In the practical operation of a roll of this character it is found advisable on account of the uneven wear on the material to divide said roll transversely forming two complete sections whereby two separate sheets of surfacing material may be attached and operated independent ofeach other, therefore in the construction of this roll the dilferent parts are substantially duplicated. The

ody portion as a matter of convenience is also constructed in two parts, one part being hereinafter called the inner body member 'andthe opposite end the outer body -Inen1ber. Both members are provided with a central hollow trunnion 1 adapted to receive and rotate on its supporting shaft, (not shown).

One end of the trunnion 1 on the inner membar is reduced as at 2 for the reception of the driving'gear 3. A pair of thin circular body flanges 44 are formed on each member, the same being located a short distance apart and supported from said trunnion. Between these flanges the trunnion is reduced, as at 55, for the purpose of receiving the movable jaws hereinafter described.

The periphery of these flanges 44 are notched or cut away as at 66, and cross pieces 77 are set into these notches,'said pieces extending longitudinally or on a slight angle to the axis of the roll to coincide with the angle of the slot through the shell. These pieces are attached to and supported by said flanges and serve to form one of the gripping jaws. The opposite movable jaw, which is formed by the longitudinal cross piece 10, corresponds in shape and form to the said opposite stationafi jaw 7 on the body portion.- This movab e jaw is preferably corrugated on its gripping face or pro vided'with a serlesof teeth 11 which are adapted to grip or pass through the ends of -'-the wrapper and enter corresponding holes 12-12 in the opposite fixed jaw. ,This movable jaw is preferably. mounted on a split collar 8 which is adapted to be rotatably mounted on the trunnion l, the parts of said collar being joined together by means of the bolts 9-9. This collar 8 is provided with outwardly extending arms 1313 forming a yoke to engage the cam which operates its aw. J The outer body member, or that portion nearest the end of the supporting shaft,-is provided with a recess 14 for receiving the nuts and washers (not shown) which hold the roll onto said shaft. A cap 15 is also threaded into this recess for keeping out the dust and dirt. The jaw 11) on the outer member is an exact duplicate of that located on the inner member, both being held normally in their closed position by means of springs similar to that shown at in-Figs. 2 and 3. A thin shell or piece of tubing 1616 is adapted to fit over the circular body flanges of each of the duplicate body members to rotate freely thereon. This shell is provided with a slot 17 through it which is set on a slightangle to the axis of the roll and corresponds to the angle of the biting jaws within.

In order to control the movement of the 1 919'on the outer memberand also through I one of the flanges 4 of the inner member. A cam 20 is fixed to this shaft '18, which cam is adapted to engage,the aforesaid downwardly extending fingers 13-13 and so actuate the moving jaw by the rotation of said shaft 18- to open said jaw against the pull of the spring 20 and assist. in closing and locking 't esame in its closed positien, shown in Fig.

3. In order to actuate thejaw in the inner .member a longer shaft'21 extends from the first jaw is operated by the cam 20, as exfront of the rollback through both of the flanges in both of the body members, and on this shaft a cam 22 is located to operate its,

corresponding jaw, in the manner that th-e .plained'above. Another feature in the pass ing ofthese two shafts through the flan es i-eo,

-- 'shell having' inwardly projectin see Figs, 2, 3 and 4. 'vided with a cam 25, (see 5) is arranged to extend through the flanges in the body.

of both members is that said members y this method are locked together so that they will rotate in time with each other. After the ends of the surfacing material have been gripped between the jaws, in the manner shown in Fig.1? it is found advan e tageous to turn the s on the body portion so as to cause a tension of the. surfacing material on the roll. "To accomplish this a yoke has been attached. to the inner surface of the fingers 23,

short s aft 24, promembers to engage said yoke whereby one same is also rotated in the manner above described. Springs, such as that illustrated at 31 in Figs. 2 and 3, are applied to each shell to assist in causing a tension on the two wrappers.

The c eration of my invention may be more ful described as follows: Surfacin D material 28, in the form of two narrow sheets,

20 to the left by a wrench on the end of shaft 18. 'After the ends of the material have been .passed between thejaws the cam is turned back to the right'and said aws are closed and positively locked, its teeth piercing the papers and firmly gripping the ends. The next operation is to turn the cam 25 by means of its shaft 24 to the right so as toforce the loose shell'around on the body portion, into the position shown in Fig. 3,. and so tighten the wrapper around the surface or shell of the roll, in which position it is held by the tension of the spring 30.

An essential feature of my invention isposition by meansof an externally operated cam.

Another feature of the invention is that the stretch or tension on the covering is also positively taken up by means of an independent cam operated from the outer end of the roll. I

The device of a practical construction eflicient in its operation and easy to manipulate.

Having thus described my invention, what I'claim as new and desire to secure'by Letters Patent, is:

1. A surfacing roll com rising a ositively driven bod portion, a she lrotatab ymounted on sai ody, a surfacing covering on said shell and means for rotatin said shell on said body for the purpose of tai slack of-said covering.

2. A sin'facin tion throu h w ich sai shellrotatafifly mounted on said body, a suring up the 'facing :coverin on said shell and a cam for rotating said s ell on said body-for the purpose of taking up the slack of said coverin 3. A surfacing roll comprising a positive y driven body portion, a shell rotatably mounted on said body, a surfacing covering on said shell means for rotating said shell on roll com rising a body pord roll is driven, a

v 15 on said shell means for rotatin said body for the purpose of takin up the slack of the surfacmg covering, an means for retaining the ends of said covering within said shell. l

4. A surfacing roll comprising a positively driven body ortion, a shell rotatably mounted on said body a surfacing covering on said shell, a cam for rotating said shell on said body for the purpose of taking up the slack of said'covering, and means for. retaining the ends of said cover within said shell. A surfacing roll comprising a positively driven body portion, a shell rotatably mounted on said body, a surfacing covering said shell on said body for the urpose 0 taking up the slack of said covering, a pair of jaws for retaining the ends of said covering Within said shell, and means for operating one of said jaws.

6. A surfacing roll comprising a positively driven body portion, a shell rotatably mounted on said body, a surfacing coverin on said shell a cam for rotatin said shel on said body for the purpose 0' taking up the slack of said covering, a pair of jaws for retainin the ends of said covering within said she I, and means for-operating one of said jaws.

7. A surfacing roll comprising a positively driven body portion, a shell rotatably mounted on said body, a surfacing covering on said shell a cam for rotatingsaid shell on -said body fol the purpose of taking up the slack of said covering, a pair of jaws for retaining the ends of said cover Within said shell and a cam for operating one of said jaws.

8. A surfacing roll comprising a positively 40 driven body portion, a shell rotatably mounted on said body, asurfacing covering on said shell'a cam for rotating said shell on said body for the purpose of taking up the slack of said covering, a pair of covering retaining jaws within said shell, and external means by which one of said jaws is positively locked both in its open and in its closed position.

' 9. A surfacing roll com rising 'a shell a surfacing covering in said s ell said shell being provided with a slot through which the ends of the covering may extend, a pair of coverin retaining jaws within said shell, externa means by'which one'of said jaws is positively locked both in its open and in its closed position and positively actuated means for causing a tension of said covering on said roll.

10. A surfacing roll comprising a positively driven body portion, a shell rotatably mounted on said bod a surfacing covering on said shell externally operated means by which said shell is positively moved on said body for the purpose of taking up the slack of said covering, a pair of covering retaining jaws within said shell, and an externally operated means by which one of said jaws is positively locked both in its open and in its closedposition.

11. A surfacing roll comprising a positively driven body portion, a shell rotatably mounted on saidbody, a surfacing covering on said shell a rotatable shaft mounted in said body and extending out through the 'end thereof, a cam on said shaft by which said shell is positively moved on said body for the purpose of taking up the slack of said covering, a pair of covering retaining jaws within said shell, and a cam externally operated by which one of said jaws is positively locked both in its open and in its said shell is positively moved on said bodyfor the purpose of taking up the slack of said covering, a air of covering retaining jaws within sai shell, a rotatable shaft mounted insaid body and extending out through the end thereof, and'a, cam on said shaft by which one of said jaws is positively locked both in its open and in its closed position. I

In. testimony whereof I affix my signature in presence of two witnesses. 4

ALFRED H, WHATLEY.

Witnesses:

HOWARD E..BARLOW', E. 1.. OGDEN, 

